Is all the selling stuff in one place? It sounds like it is in the garage...if so, whatever sells, great. All the rest plan to donate or give away as soon after the sale as possible -- as in load up your car after the sale and drive to Salvation Army or Goodwill and drop it off or call for a pickup. That will prevent the stuff from leaking its way back into your clean home. Otherwise keep reminding yourself that this will pass and soon you will have decluttered and hopefully have a nice chunk of cash too!